Nuclear-spin-dependent parity-nonconserving effects in thallium, lead and bismuth atoms

Nuclear Anapole Moments and the Parity-nonconserving Nuclear Interaction

The anapole moment is a parity-odd and time-reversal-even electromagnetic moment. Although it was conjectured shortly after the discovery of parity nonconservation, its existence has not been confirmed until recently in heavy nuclear systems, which are known to be the suitable laboratories because of the manybody enhancement. By carefully identifying the nuclear-spin-dependent atomic parity non...

Radiative Corrections to Parity Nonconserving Transitions in Atoms

Abstract The matrix element of a bound electron interacting with the nucleus through exchange of a Z boson is studied for the gauge invariant case of 2s1/2 − 2p1/2 transitions in hydrogenic ions. The QED radiative correction to the matrix element, which is −α/2π in lowest order, is calculated to all orders in Zα using exact propagators. Previous calculations of the first-order binding correctio...

Discovery of the thallium, lead, bismuth, and polonium isotopes

Currently, forty-two thallium, forty-two lead, forty-one bismuth, and forty-two polonium isotopes have so far been observed; the discovery of these isotopes is discussed. For each isotope a brief summary of the first refereed publication, including the production and identification method, is presented. ∗Corresponding author. Email address: [email protected] (M. Thoennessen) Preprint sub...

A Study of Single - Particle Parity - Nonconserving Nuclear Matrix Elements

An IUCF-LANL-Princeton collaboration has been formed to measure the weak mixing between single-particle states in 207~b.132 The experiment was originally motivated by recent measurements at the Los Alamos Neutron Scattering Center by the TRIPLE c~l labora t ion .~ '~ As discussed below, it is now understood that the experiment has the potential of measuring the isoscaler weak amplitude in n ~ c...

Induced parity nonconserving interaction and enhancement of two-nucleon parity nonconserving forces.